Big Filament Stand System with Ball Bearing d7

This is a big filament stand / holder, but less than 20*20*20 so most of the printer can print it.
I've done it for d20 filament's coil with a 8cm thickness but you can put a bigger one.
You just have to print :
- 4 times the "SupportFil_v1_0.stl" file (2 times + 2 times mirror version)
- 12 times the "BitonioFil_v1_0.stl" file
- 4 times the "SupportBallBearing_v1_0.stl" file

If you have some idea for the improvement of this project, I'll like to h